headrace

[ hed-reys ]
/ ˈhɛdˌreɪs /

noun

the race, flume, or channel leading to a water wheel or the like.

Origin of headrace

First recorded in 1840–50; head + race1

British Dictionary definitions for headrace

headrace
/ (ˈhɛdˌreɪs) /

noun

a channel that carries water to a water wheel, turbine, etc Compare tailrace